If you have cold winters make sure you pick a footing that you can mix calcium chloride in to. I like the GGT footing but don't think you can mix the salt in.
I have the footing suggested in the "underfoot" manual from the USDF. It's masonry sand, green sawdust and calcium chlor. I don't have to wet it down in the winter at all.
"The stumbler doesn’t build her life by being better than others, but by being better than she used to be."
We have a geotextile flooring and its absolutely great. My previous barn also had this footing and I noticed a lot less injuries, so when I had to move I made sure I would move to something with the same footing.
Personally, I like a coarse sand - easier to maintain, less expensive when you have to replace footing. But I have to maintain my own footing and pay for replacement footing - if it was on someone else's time and dollar, my answer might be different